686614197 has 8 divisors (see below), whose sum is σ = 922694656. Its totient is φ = 454138272.

The previous prime is 686614183. The next prime is 686614199. The reversal of 686614197 is 791416686.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 686614197 - 2¹⁰ = 686613173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686614199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900688 + ... + 901449.

It is an arithmetic number, because the mean of its divisors is an integer number (115336832).

Almost surely, 2^686614197 is an apocalyptic number.

It is an amenable number.

686614197 is a deficient number, since it is larger than the sum of its proper divisors (236080459).

686614197 is a wasteful number, since it uses less digits than its factorization.

686614197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802267.

The product of its digits is 435456, while the sum is 48.

The square root of 686614197 is about 26203.3241593505. The cubic root of 686614197 is about 882.2078672041.

The spelling of 686614197 in words is "six hundred eighty-six million, six hundred fourteen thousand, one hundred ninety-seven".